Successful establishment of denitrification-enhanced anaerobic digestion with nitrate as an exogenous stimulant for effective hydrolysis and methanogenesis of N, N-dimethylformamide-containing wastewater
Suzhou University of Science and Technology · Tohoku University · +1 more institution
Abstract
/d was effectively treated during a 350-day long-term operation. The UASB initially realized a rapid start-up and maintained a high DMF removal with stable methane production for two months due to the enrichment of DMF-hydrolyzing bacteria (DHB) contained in the seed sludge. However, hydrolysis of DMF was gradually weakened due to the continuous decaying of DHB, and these DHB were unable to proliferate anaerobically. Dosing nitrate to the UASB resulted in a significant recovery of both DMF removal and methane production. Since DHB like Paracoccus are also known as denitrifying bacteria, dosage of nitrate significantly stimulated and enhanced their growth and DMF-hydrolyzing ability under the condition of…
Citation impact
- FWCI
- 61.18
- Percentile
- 100%
- References
- 67
Authors
6Topics & keywords
- Methanogenesis
- Nitrate
- Denitrifying bacteria
- Anaerobic digestion
- Denitrification
- Wastewater
- Methane
- Hydraulic retention time
- Clean water and sanitation